Half to thomas ii



CHARLES A. ADDE, OF LOCK HAVEN, PENNSYLVANIA, ASSIGNOR OF ONE- HALF TOTHOMAS H. HARMON AND ARTHUR A. HARMON, OF SAME PLACE.

SIZING COMPOSITION.

SPECIFICATION forming part of Letters Patent No. 606,951, dated July 5,1898.

Application filed November 26, 1897.

To all whom it may concern.-

Be it known that I, CHARLES A. ADDE, a citizen of the United States,residing at Lock Haven, in the county of Clinton and State ofPennsylvania,have invented certain new and useful Improvements in SizingCompositions, of which the following is a specification.

This invention consists in a novel sizing to be applied to articlespreparatory to coating them with aluminium. This sizing is composed ofthe following ingredients in substantially the proportionsmentionednamely, pure White lead, twenty per cent; Japan gold-size,fifty percent; white vitriol or sulfate of zinc, twenty-five per cent,and ultramarine-blue five per cent.

The manner of compounding the sizing consists in mixing the white leadwith a part of the goldsize to the consistency of heavy paste, thenadding ultramarine-blue ground with the white vitriol, and thenthoroughly mixing the ingredients for about ten minutes, and finallyadding the balance of the goldsize and stirring until all are thoroughlymixed and the compound is of the consistency of heavy varnish, when thesizing is ready for use.

The proportions of the several materials maybe slightly varied withoutdestroying the result; but I have found the above proportions to producea Very excellent article.

The Japan gold-size is a well-known substance prepared by dissolving asuitable gum,

Serial No. 659,829- (No specimens.)

such as dammar resin, in boiling linseed-oil. Other gums may besubstituted, the manner 3 5 of preparing the gold-size being the same.

If too thick, the gold-size is suitably thinned with turpentine.

The sizing is used by applying it like Varnish and then dusting orblowing on the alu- 4o minium in powdered form. It may also be used as abase for aluminium-leaf.

This sizing dries very hard, and at the same time it is pliable andtough and will not break or peel off. The white vitriol changes the na-5 ture of the gold-size, overcoming the gummy effect and causing it todry hard. The ultramarine-blu e and white lead produce a bluishwhitetint which will not turn yellow with age. This sizing produces with thealuminium a beautiful and bright effect. The aluminium takes readily andholds well, standing out boldly on the surface.

What I claim is- An aluminium-sizing consisting of the followingingredients combined substantially in the manner and proportions setforth, viz., fifty parts Japan gold-size, twenty parts pure white lead,twenty-five parts white vitriol and five parts ultramarine-blue.

In testimony whereof I affix my signature in presence of two witnesses.

CHARLES A. ADDE.

Witnesses:

Gno. A. BROWN, R. B. McOoRMIcK.

